| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials Science for Global Development -- Health, Energy, and Environment: An SMD Symposium in Honor of Wole Soboyejo
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| Presentation Title |
Conjoint Influence of Thermal and Stress Cycling on Functional Fatigue Behavior of the NiTiZr Shape Memory Alloys |
| Author(s) |
Santosh Sampath, Srivatsan T S |
| On-Site Speaker (Planned) |
Srivatsan T S |
| Abstract Scope |
The shape memory alloys (SMAs) are often required to function in a cyclic manner between their transition temperatures when chosen for use in applications. The phenomenon of functional fatigue, often occurs when shape memory alloy (SMA) actuators are subjected to repeated use due to thermomechanical cycling. This causes the two functional properties, namely: (i) transformation temperatures, and (ii) recovery strain, to be affected, which in turn results in a degradation in shape memory characteristics of the chosen alloy. To build a SMA actuator having a combination of performance and improved fatigue life, it is essential to delve deeper into studying the influence of both operational and testing parameters during thermomechanical cycling. In this presentation, the results of a recent study aimed at investigating the impact of both thermal cycling and stress cycling on NiTiZr high temperature shape memory alloy and its effect on functional fatigue will be highlighted and discussed. |
| Proceedings Inclusion? |
Planned: |